Low constant speed control method suitable for battery power engineering vehicle

The invention discloses a low constant speed control method suitable for a battery power engineering vehicle. The method comprises the steps that a current running speed value of the battery power engineering vehicle is obtained; the current running speed value is compared with a speed target value, and speed error amount is obtained; derivation is conducted on the speed error amount, and a speed error change rate is obtained; according to fuzzy control experience, a value of a fuzzy factor is obtained according to a speed error rate and the speed error change rate; according to the speed error amount, the incremental quantity of controlled quantity is obtained, the value of the fuzzy factor is multiplied by the incremental quantity of the controlled quantity, and fuzzy incremental quantity after fuzzy computing is obtained; current control quantity is obtained, the fuzzy incremental quantity is added to the current control quantity, and a sum is output to be used as next control quantity. The low constant speed control method suitable for the battery power engineering vehicle is based on the fuzzy self-adaptive technology, parameters can be adjusted and controlled voluntarily on the basis of experience, and accurate closed-loop control is achieved.